421142650 has 24 divisors (see below), whose sum is σ = 817385184. Its totient is φ = 161132400.

The previous prime is 421142639. The next prime is 421142653. The reversal of 421142650 is 56241124.

It is a happy number.

It is a super-2 number, since 2×421142650² = 354722263298045000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (421142653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 181956 + ... + 184255.

It is an arithmetic number, because the mean of its divisors is an integer number (34057716).

Almost surely, 2^421142650 is an apocalyptic number.

421142650 is a deficient number, since it is larger than the sum of its proper divisors (396242534).

421142650 is a wasteful number, since it uses less digits than its factorization.

421142650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366246 (or 366241 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 421142650 is about 20521.7604020708. The cubic root of 421142650 is about 749.5657634482.

Adding to 421142650 its reverse (56241124), we get a palindrome (477383774).

The spelling of 421142650 in words is "four hundred twenty-one million, one hundred forty-two thousand, six hundred fifty".